As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FORWARD WINDOW OVERHEAT LIGHT ILLUMINATED. RAN QRH AND LIGHT STAYED ON. GROUNDED - YES. REF FIM 30-41 TASK 812. WINDOW SENSOR FAULT. CONFIRMED LEFT FWD FAULT. WHCU M321 SHOWS SENSOR FAULT OF PRIMARY SENSOR. MOVED SENSOR SELECT SWITCH FROM THE PRIMARY TO SECONDARY POSITION. OPS TEST GOOD.